$bg-color:rgb(18, 62, 60);
$primary-color:rgb(57, 122, 109);
$font-family:'Courier New', Courier, Helvetica, serif;
body {
  font-family: $font-family;
  font-weight: 400;
  background-color: $bg-color;
  color: #999;
}
.c {
  &-title {
    font-size: 50px;
    &__back {
      color:#aaa;
      cursor: pointer;
      &:hover {
        color:#ccc;
      }
      &--hide {
        color:$bg-color;
        cursor: default;
        &:hover {
          color:$bg-color;
        }
      }
    }
    &__btn {
       color:rgb(121, 138, 32);
       font-size: 18px;
       cursor: pointer;
       &-icon {
         font-size: 22px;
       }
       &:hover {
         color: lighten(rgb(121, 138, 32), 5%);
       }
    }
  }
  &-color {
    &--primary {
      color: rgb(70, 140, 128);
    }
  }
}